Safety apparatus for elevators.



PATENTED JUNE 26, 1906.

J. BABIO. SAFETY APPARATUS FOR ELEVATORS.

APPLICATION FILED IEB.26.1906.

2 SHEET$SHEET 1.

IN VEN T01? WI THESSE S $72677? aZv; M 5) A TTOHIVEYS PATENTED JUNE 26, 1906.

J. G. BABIO. SAFETY APPARATUS FOR-ELEVATORS.

APPLICATION FILED FEB. 26 1906.

2 SHEETS-SHEET 3 INVENTOI? fie opd/g ZaZ/o ATTORNEYS,

WITNESSES raanr s ries.

Jose scene-rs saero, or NEW roe-K. itr.

tpecificaticn of Letters Patent.

*r mtearun as, recs.

Application filed Samuel- 2B, 1906, Serial filo. 802,871.

T (LZZ whom it may concern: I

Be it known that 1, Jose GONZALEZ BABKO, a subect ofthe King of S ain, residing at New ork, in the county or New York and State of New York, have invented certain new and useful Improvements in Safety Apparatus forElevators, of which the followhoisting 'ingus a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to elevators; and the ob'ect. thereof is to provide an improved sa ety apparatus or appliance for use n con" nection with elevators, and particularly pas senger-elevators, whereby devices of this class may be safely operated and the serious and sometimes fatal accidents which hequently result from the breakage of the cable or device may be avoided; and with this and other objects in view the invention consists in an apparatus of the class specified constructed as hereinafter described and claimed.

The invention is fully disclosed in the following sp ecifica-tion, of which the accompanying drawings form a part, in which the separate parts of my iin roveinent are desi hated by suitable reference characters in each of the views, and in which Figure 1' is a side View of an ordinary eleniy iniurovement; Fig. 2, a view at right angles to ig. l with part of the construction broken away; Fig. 8, a view similar to Fig. 2, butshowing the parts in a different position Fig. i, a plan view, partly in section; Fig. 5, a view similar to Fig. 2, but showing a modification; Fig. 6, a section on the line 6 6 of Fig. 4, and Fig. 7 a section on the line 7 7 of 4.

In the drawings forming. part of this specification I have shown at a an ordinary elevator-car which in practice is mounted on an ordinary elevator-shaft provided with side guidesa and at the top of which are placed cross-beams a which support the pulley a over which the hoisting-cable a is passed, and in practice I secure to the to of the elevator-car and at the o osite sides thereof keepers or caps l in'w'lnc are laced pillowblocks 5 which form en. 0, which are placed parallel and extend across the top of the elevator-car and are provided at their opposite ends eccentrics c which are keyed thereto, as clearly shown in Fig. 2, and in the operation of the apparatus as hereinafter described the eccentrics c opgreater distance from the ports 101' two shafts erate in connection with the guides at of the elevatorcar. The shafts 0 also pass through centrally-arranged keepers d, which are secured to the too of the car and form additional supports and bearings for said. shafts, and I also provide two crankdevers e, through the shorter arms of which the shafts 0 pass, and the longer arms ofsaid crank-levers are directed outwardly, and said crank-levers are also rovided each with an inwardly-directed been 6 and in the operation of the apparatus when the parts are in their normal position the heads 6 of the crank-levers e abut against each other, as shown in Fig. 2. Each of the. crank-levers e is also preferably provided with a weight 2 and each is also preferably provided with a tension-s ring e, and the springs e are connected with the top of the car a; but in practice both the weights and the springs 6 need not necessarily be employed, as either said weights or springs will do the work required.

The hoisting-cable a in practice is connected with the crank-levers e at e by chains or similar devices c and said chains or similar devices are connected by a link or ring a, which forms a connection for the cable 0/ Under ordinary circumstances or as long as the parts are 0 crating normally the position of the cran -levcrs e and of the shafts 0 will be that shown in Fig. 2 but if at any time the cable a is broken the levers 6 will assume the position shown in Fig. 3 and the eccen trics 0 will be turned so as to o erate in connection with the guides a an prevent the descent of the car.

The construction shown in Fig; 5 is the same in all res sets as that shown in Figs. 1,2, and 3 except thht the shafts c are placed at a slightly guides a? and are provided at their ends with cranks f, with which are connected brake shoes 9, which are normally held in the position shown in Fig. 5, but which if the cable a be broken will be forced into contact with the guides a and will operate to stop the descent of the earths same as with the construction shown Figs. 1, 2, and 3 of the drawings. ln'the form of construction shown in Figs.

'1, 2, 3, and 4 the caps or keepers?) extend outwardly far enough to inclose the eccentrics c and in the form of construction shown in Fig. 5 to inclose the cranks f and brake-shoes g, and the guides a ass vertically through the outer ends of said lca sor. keepers, and it will be understood that t c said caps or keep top of the car or car-frame, and any suitable means or devices may be employedfor this purpose. I

It will be understood that the eccentrics and the shoes 9 in the form of construction shown in Fig. 5 are normally separated from the guides a but a slight distance and only a slight movement of the shafts c is necessary to throw said eccentrics or said shoes into contact with said guides, and thisis effected by the weights 0 and springs a or either of them, and the moment that said eccentrics or said shoes strike the guides a the weight of the car will operate to cause said eccen trics or said shoes to securely grasp said guides and to support the car. It will also be understood that when the car reachesthe bottom of the shaft if it is provided with a support independent of the cable the shafts 0 will operate as hereinbefore described and the eccentrics c or shoes g will be thrown into contact with the guides c and I also preferably in practice provide the guides a at the bottom of the shaft and at the point where the eccentrics 0* or shoes 9' come in contact therewith when the car is at rest at the bottom of the shaft with cushions of rubber or similar material, as shown at h in Fig. 1.

It will be observed that in the normal position of the parts, as shown in Fig. 2, the chains or other flexible devices a are connected with the crank-levers e directly over the shafts c, this arrangement being adapted in order to secure the proper operation of said levers, as herein described, and While I haveshown said shafts as provided at their ends in one form of construction with ordi nary eccentrics and in the other form of construction with brake-shoes it will be apparout that both forms of these devices operate as clamps or brakes to engage the guides (1 so as to arrest or stop the downward movement of the car if the cable a is broken.

I am aware that elevator-cars have herein:

before been provided with safety apparatus for a purpose similar to that for which my apparatus is designed but the advantages of my apparatus are in its simplicityin construction and operation, in the positive stop which is provided for the car, and in the comparative expense, which is much less with my improvement than with other apparatus of this class usually constructed.

Having fully described my invention, what I claim as new, and desire to secure 'by Letters Patent, is' i 1. In a safety apparatus for elevator-cars,

parallel shafts mounted transversely of the senses top of the car and provided at their ends with brakes adapted to operate in connection" with vertical guides at the opposite sides of the car, crank-levers arranged transversely of said shafts and onearm of each of which is secured to one of said shafts and the other arms of which project in opposite directions, said crank-levers being provided with inwardly-directed members which are adapted to abut when the car is in operation, means whereby the hoisting-cable may be connected with both of said crank-levers over their connection with said shafts, and means for depressing the are not connected with said shafts, substan tially as shown and described. 2. In-a safety apparatus for elevator-cars, parallel shafts mounted transversely of the top of the car and provided at-their ends with brakes adapted to operate in cbnnection with vertical guides at the opposite sides of the car, crank-levers arranged transversely of said shafts and one arm of each of which is secured to one of said shafts and the other arms of which project in opposite directions, said crank-levers being provided with inwardly-directed members which are adapted to abut when the car is in operation,'means arms of said levers which whereby the hoisting-cable may be connected with both of said crank-levers over their connection with said shafts, and means for depressingthe arms of said levers which are npt connected with said shafts, comprising tensional springs which connect said arms with the top of the car, substantially as shown and described.

3. A safety-brake for elevator-cars, comprising vertical guides between which the car moves, parallel shafts mounted transversely of the top of the car and provided at their ends with, brakes normally .held out' of contact with said guides, crank-levers arranged over said shafts and transversely thereof,

and one arm of each of which is secured ti) one of said shafts and the other arms of which roject in opposite directions, said crankevers being provided with members which abut when the car is in operation, a hoisting apparatus connected with said crank-levers over their connection with said shafts, and

means for depressing the arms of said levers which are not connected with said shafts and turning said shafts so as to operate the brakes when the hoisting a paratus breaks, substantially as shown an described.

In testimony presence of the subscribing witnesses,,this 24th day of Februar 1906. JOSE ONZALEZ BABIO.

- Witnesses:'

. F. A. STEWART,

, C. MULEEANY.

that I claim the foregoing as f. my invention 1 have signed my name, in 

